(e.g., (3.1.34) (p.141) in Kilbas, Srivastava and Trujillo [1]}).
For \(0<\alpha <1\)  and \(\gamma > -1\) , the right-hand side of (1.6) makes
sense and we can obtain
\(v(t) = a + \frac{\Gamma (\gamma +1)}{\Gamma (\alpha +\gamma +1)}t^{\alpha +\gamma }, \quad t>0. \qquad \mathrm {{(1.7)}}\) 
